Blender Hangs Loading Render Kernels in GPU Viewport Mode #89238

New Issue

rohan stevenson · 2021-06-17T14:37:43+02:00

rohan stevenson commented

2021-06-17 14:37:43 +02:00

System Information
Operating system: Linux-5.8.0-55-generic-x86_64-with-glibc2.31 64 Bits
Graphics card: NVIDIA GeForce RTX 3070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 465.27

Blender Version
Broken: version: 2.93.0, branch: master, commit date: 2021-06-02 11:21, hash: 84da05a8b8
Worked: Not tried
Short description of error
In some circumstances, Blender will hang or fail rendering, either when doing a final render or when turning on render view in the Viewport

Open attached Blender file
Blend file is set to Optix GPU/CPU
Turn on Render view in viewport
Blender hangs loading render kernels.

Additionally, the materials in this file come from a blend file that will not render in a Scene in Eevee, but will render eevee in the viewport, will render in Cycles, but will not render a viewport render. Lookdev mode will also not work.

In this file, lookdev is not showing a volume - which is working in the original file, but seems to be incompatible with eevee. Some of this might be pilot error, but I am getting satisfactory renders - I just can't work iteratively to develop the texture. Previous files using this texture have rendered in Eevee but with mixed results - either it looks fine or occasionally it renders with flickering which I take to be a limitation with Eevee,

It is possibly Linux related, and may be related to this:

https://developer.blender.org/T87724

Volume for 26.zip

**System Information** Operating system: Linux-5.8.0-55-generic-x86_64-with-glibc2.31 64 Bits Graphics card: NVIDIA GeForce RTX 3070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 465.27 **Blender Version** Broken: version: 2.93.0, branch: master, commit date: 2021-06-02 11:21, hash: `84da05a8b8` Worked: Not tried **Short description of error** In some circumstances, Blender will hang or fail rendering, either when doing a final render or when turning on render view in the Viewport - Open attached Blender file - Blend file is set to Optix GPU/CPU - Turn on Render view in viewport - Blender hangs loading render kernels. Additionally, the materials in this file come from a blend file that will not render in a Scene in Eevee, but will render eevee in the viewport, will render in Cycles, but will not render a viewport render. Lookdev mode will also not work. In this file, lookdev is not showing a volume - which is working in the original file, but seems to be incompatible with eevee. Some of this might be pilot error, but I am getting satisfactory renders - I just can't work iteratively to develop the texture. Previous files using this texture have rendered in Eevee but with mixed results - either it looks fine or occasionally it renders with flickering which I take to be a limitation with Eevee, It is possibly Linux related, and may be related to this: https://developer.blender.org/T87724 [Volume for 26.zip](https://archive.blender.org/developer/F10177623/Volume_for_26.zip)

rohan stevenson commented

2021-06-17 14:37:43 +02:00

Added subscriber: @rohan.stevenson

Pratik Borhade commented

2021-07-05 12:38:06 +02:00

Added subscriber: @PratikPB2123

Pratik Borhade commented

2021-07-05 12:38:06 +02:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Pratik Borhade commented

2021-07-05 12:38:06 +02:00

@rohan.stevenson , thanks for the report.

Will the problem be same with default scene also?

Also can you please confirm if denoising is enabled or not (from rendered properties tab). Recently so many similar reports are reported on tracker where problem occurs due to enabling denoising option

@rohan.stevenson , thanks for the report. Will the problem be same with default scene also? Also can you please confirm if denoising is enabled or not (from rendered properties tab). Recently so many similar reports are reported on tracker where problem occurs due to enabling denoising option

rohan stevenson commented

2021-07-05 13:21:16 +02:00

Thanks for the feedback. Without checking, I would say I have de-noising for the viewport, but not for render, though I have the filter/denoise node in the compositor for rendering.

The blend file uploaded exhibited the problem.

Now that you have flagged that it might be related to de-noising, if the issue occurs again I can check that and hopefully pin down the culprit - or at least get closer.

Thanks for the feedback. Without checking, I would say I have de-noising for the viewport, but not for render, though I have the filter/denoise node in the compositor for rendering. The blend file uploaded exhibited the problem. Now that you have flagged that it might be related to de-noising, if the issue occurs again I can check that and hopefully pin down the culprit - or at least get closer.

Pratik Borhade commented

2021-07-06 09:00:09 +02:00

@rohan.stevenson , thanks for checking. Please confirm if enabling Denoising -> Render also causes Blender to freeze.

Also: check if disabling denoising option solve your problem. (This is not the solution but confirming if really denoising is the cause)

@rohan.stevenson , thanks for checking. Please confirm if enabling `Denoising -> Render` also causes Blender to freeze. Also: check if disabling denoising option solve your problem. (This is not the solution but confirming if really denoising is the cause)

Pratik Borhade commented

2021-07-13 13:27:41 +02:00

@rohan.stevenson , does this happen after disabling denoising viewport/render ? Can you please confirm?

rohan stevenson commented

2021-07-13 14:45:51 +02:00

I'm so sorry I haven't had a chance to confirm this. I'll try to look at it in a day or 2. In last throws of compositing and editing.

Pratik Borhade commented

2021-07-22 02:59:57 +02:00

does this happen after disabling denoising viewport/render ? Can you please confirm?

@rohan.stevenson , any news?

>does this happen after disabling denoising viewport/render ? Can you please confirm? @rohan.stevenson , any news?

rohan stevenson commented

2021-07-23 09:52:49 +02:00

My apologies.

I have not forgotten this - but after finishing my big project I am on holiday. Let me get into this on Monday and I can give you a definitive answer.

My apologies. I have not forgotten this - but after finishing my big project I am on holiday. Let me get into this on Monday and I can give you a definitive answer.

Pratik Borhade commented

2021-08-13 12:58:02 +02:00

Changed status from 'Needs User Info' to: 'Archived'

Pratik Borhade closed this issue

2021-08-13 12:58:02 +02:00

Pratik Borhade commented

2021-08-13 12:58:02 +02:00

No activity for more than a week. As per the tracker policy we assume the issue is gone and can be closed.

Thanks again for the report. If the problem persists please open a new report with the required information.

No activity for more than a week. As per the tracker policy we assume the issue is gone and can be closed. Thanks again for the report. If the problem persists please open a new report with the required information.

Sign in to join this conversation.

No Label

Download

What's New

Blender Studio

Manual

Developers Blog

Documentation

Benchmark

Blender Conference

Development Fund

One-time Donations

Blender Hangs Loading Render Kernels in GPU Viewport Mode #89238